There are a few more, just have a look at http://de.wikipedia.org/wiki/Deutsche_Sprache
Look for "Offizieller Status".
0 voted
February 11, 2008
0
Answered
Like everything else, it's pretty easy on a Mac:
Alt+u and a, o or u (or A, O, U for capital umlauts). (Alt+u indicates that the next character should be decorated with those two little dots)